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To fix the "speed not selected message", Under chassis and body you need to go into speed sources and set driven wheel speed source to something relevant - probably LR wheel speed in an RWD car with a gearbox based speed sensor.

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I think you just found a bug!. It is not common to use closed loop with the speed lockout turned off so it probably hasnt been noticed before but as you have found when you turn the speed lockout off, the idle control goes into constant "speed not defined" mode

To get around this you just need to assign a speed source - you dont actually need a speed sensor connected to the ecu or even a DI assigned to speed. The settings below worked in your map for me.